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| Mirrors > Home > MPE Home > Th. List > ttrclco | Structured version Visualization version GIF version | ||
| Description: Composition law for the transitive closure of a relation. (Contributed by Scott Fenton, 20-Oct-2024.) |
| Ref | Expression |
|---|---|
| ttrclco | ⊢ (t++𝑅 ∘ 𝑅) ⊆ t++𝑅 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relres 5997 | . . . 4 ⊢ Rel (𝑅 ↾ V) | |
| 2 | ssttrcl 9723 | . . . 4 ⊢ (Rel (𝑅 ↾ V) → (𝑅 ↾ V) ⊆ t++(𝑅 ↾ V)) | |
| 3 | coss2 5835 | . . . 4 ⊢ ((𝑅 ↾ V) ⊆ t++(𝑅 ↾ V) → (t++(𝑅 ↾ V) ∘ (𝑅 ↾ V)) ⊆ (t++(𝑅 ↾ V) ∘ t++(𝑅 ↾ V))) | |
| 4 | 1, 2, 3 | mp2b 10 | . . 3 ⊢ (t++(𝑅 ↾ V) ∘ (𝑅 ↾ V)) ⊆ (t++(𝑅 ↾ V) ∘ t++(𝑅 ↾ V)) |
| 5 | ttrcltr 9724 | . . 3 ⊢ (t++(𝑅 ↾ V) ∘ t++(𝑅 ↾ V)) ⊆ t++(𝑅 ↾ V) | |
| 6 | 4, 5 | sstri 3918 | . 2 ⊢ (t++(𝑅 ↾ V) ∘ (𝑅 ↾ V)) ⊆ t++(𝑅 ↾ V) |
| 7 | relco 6106 | . . . 4 ⊢ Rel (t++(𝑅 ↾ V) ∘ 𝑅) | |
| 8 | dfrel3 6195 | . . . 4 ⊢ (Rel (t++(𝑅 ↾ V) ∘ 𝑅) ↔ ((t++(𝑅 ↾ V) ∘ 𝑅) ↾ V) = (t++(𝑅 ↾ V) ∘ 𝑅)) | |
| 9 | 7, 8 | mpbi 233 | . . 3 ⊢ ((t++(𝑅 ↾ V) ∘ 𝑅) ↾ V) = (t++(𝑅 ↾ V) ∘ 𝑅) |
| 10 | resco 6254 | . . 3 ⊢ ((t++(𝑅 ↾ V) ∘ 𝑅) ↾ V) = (t++(𝑅 ↾ V) ∘ (𝑅 ↾ V)) | |
| 11 | ttrclresv 9725 | . . . 4 ⊢ t++(𝑅 ↾ V) = t++𝑅 | |
| 12 | 11 | coeq1i 5838 | . . 3 ⊢ (t++(𝑅 ↾ V) ∘ 𝑅) = (t++𝑅 ∘ 𝑅) |
| 13 | 9, 10, 12 | 3eqtr3i 2791 | . 2 ⊢ (t++(𝑅 ↾ V) ∘ (𝑅 ↾ V)) = (t++𝑅 ∘ 𝑅) |
| 14 | 6, 13, 11 | 3sstr3i 3959 | 1 ⊢ (t++𝑅 ∘ 𝑅) ⊆ t++𝑅 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 Vcvv 3450 ⊆ wss 3896 ↾ cres 5653 ∘ ccom 5655 Rel wrel 5656 t++cttrcl 9715 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pr 5391 ax-un 7755 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-pss 4013 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6307 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6497 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7381 df-ov 7427 df-oprab 7428 df-mpo 7429 df-om 7882 df-2nd 8006 df-frecs 8307 df-wrecs 8338 df-recs 8387 df-rdg 8426 df-1o 8484 df-oadd 8488 df-ttrcl 9716 |
| This theorem is used by: (None) |
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